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x in (-oo:+oo)
(-1/2)*(8*x-2) = 4 // - 4
(-1/2)*(8*x-2)-4 = 0
-1/2*(8*x-2)-4 = 0
-1/2*(8*x-2)-4 = 0
-4*x-3 = 0
-4*x-3 = 0
-4*x-3 = 0 // + 3
-4*x = 3 // : -4
x = 3/(-4)
x = -3/4
x = -3/4
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